I went to the Habitat Restore today and one of the items I got was a Gordon Tools wrench from Sheffield England. It is kinda odd as it was made in England in a Imperial size. 1/2 A.F. marked one one side and 50 A.F. on the other side. From what I can understand A.F. means ACROSS THE FLATS. It is a open end on one end the other end is just rounded off like the end was cut off by Bubba. The end that looks cut off was done at the factory and plated, so Bubba never owned it.

Yes it does look like the one in your picture. I never thought about the English making Imperial sized tools. I don't think they imported as many machines from us as we did from them. Thank you for the picture. My picture person needs to teach me how to post pictures using my new phone /camera. I have very few English made /marked tools. All my Whitworth / British Standard tools were made here or in other countries except England.

Indeed. I'm always amazed at the markings on Whitworth wrenches, which refer to the size of the bolt shank. Apparently, if I understand the markings correctly, a given hex head on a bolt/cap screw will apply to two (or more?) different shank sizes, depending on whether the threads are coarse or fine. British mechanics must be geniuses!

We basically had the same thing back in the day with SAE, USS, and Cap Screw sizes on wrenches. The only difference was that ours were all marked on one wrench giving 2 or 3 sizes for one wrench opening..

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